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ActionBar supportActionBar = getSupportActionBar();supportActionBar.setIcon(R.mipmap.gender);//设置ActionBar的icon图标supportActionBar.setTitle("gender");//设置ActionBar的标题supportActionBar.setHomeButton

1.让当前Activity 继承ActionBarActivitypublic class MainActivity extends AppCompatActivity implements SearchView.OnQueryTextListener{}2.menu 布局文件xml version="1.0" encoding="utf-8"?>menu xmlns

首先是menu_main.xml布局文件menu xmlns:android="http://schemas.android.com/apk/res/android" xmlns:app="http://schemas.android.com/apk/res-auto" xmlns:tools="http://schemas.android.com/tools" t